NON-CONTACT POWER SUPPLY DEVICE

摘要

Provided is non-contact power supply device that supplies power between a main body side and a load side capable of being displaced relative to the main body side, said power supply occurring from the main body side and without the device being in contact with a resonance circuit such as an ultrasonic oscillator provided on the load side. The non-contact power supply device has a novel construction and is capable of more effectively driving the load-side resonance circuit. A primary-side power coil (66a) is provided on the main body (16) side and a secondary power coil (66b) is provided on the load (22) side. The non-contact power supply device is configured such that: drive power is supplied to the load (22) resonance circuit (50) from power supply devices (100, 102) on the main body (16) side, via the primary-side power coil (66a) and the secondary power coil (66b); the primary-side power coil (66a) is enclosed by a core member (70); and the secondary power coil (66b) is not enclosed by a core member.